Replies to Minipulse Plus

[Silver Dollar]

So I'm working on a MiniPulse build and hope to incorporate the gorund balance circuit
from the start. Here's my schematic. Can someone give it a look and make sure I have
everything correct? The power configuration is a bit funny...

[WM6]

Many thanks, Silver Dollar, for GB upgraded schematic of MiniPulse.

[Silver Dollar]

Your welcome! I'm hopeing to make an upgrade board that will sit where the
removed components are and show the layout here. They would go in the yellow
box in this picuture;


Still trying to figure out how to connect the new board. Wires can break if handled a lot
so maybe stacked sockets so it can just plug in...

[Davor]

So I'm working on a MiniPulse build and hope to incorporate the gorund balance circuit
from the start. Here's my schematic. Can someone give it a look and make sure I have
everything correct? The power configuration is a bit funny...

It seem mostly OK. R42 needs some resistance in series, say 6k8, to prevent overload. Also there is no decoupling on U5 nor on U6.

[Qiaozhi]

So I'm working on a MiniPulse build and hope to incorporate the gorund balance circuit
from the start. Here's my schematic. Can someone give it a look and make sure I have
everything correct? The power configuration is a bit funny...

[ATTACH]31140[/ATTACH]

The 100pF sync cap is missing between Q2 collector and U2 pin 7.

[Silver Dollar]

Ok I fixed it. Here's a picture and the ExpressSCH file;

[6666]

SD thats great work thanks,
could you please consider providing pads for a series diode between the coil and fet ?
if people dont wont to fit the diode then they just insert a jumper , but the holes need to
be about 1.2mm to account for the thick legs on some of the fast diodes, thanks.

[6666]

SD Davor suggested R42 to be 6k8, your schematic has it at 68K.

[johnandles]

What prog opens sch. files
Eagle 7 errors on me?
Thanks
John

[6666]

http://www.expresspcb.com/expresspcb...c_software.htm

[josewashere]

Do you know were I can find the unmodified ver C circuit diagram for the MMP. I want to do a side by side comparison with your GB version diagram.

[johnandles]

http://www.expresspcb.com/expresspcb...c_software.htm

Thanks 6666, same sch. different prog...
Thanks

[6666]

Yes John there are a couple of programs that use the .sch extension

[Qiaozhi]

Do you know were I can find the unmodified ver C circuit diagram for the MMP. I want to do a side by side comparison with your GB version diagram.

Minipulse Plus REV-C

[WM6]

R42 needs some resistance in series, say 6k8, to prevent overload.

You mean R41 from SD schematic?